LOCAL WATER / COCKRELL HILL, TEXAS
← City water mapCockrell Hill.
Your water report.
The source, the measurements and the context for your home. Every figure keeps its date and its paper trail.
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YOUR LOCAL WATER PEOPLE
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your water.
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03 / YOUR NEXT STEP
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Whole-house filtration
Discuss your water concerns, household use and the specific performance of a proposed system.
Explore filtration ↗Water softeners
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Explore softeners ↗Reverse osmosis
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Explore reverse osmosis ↗Any treatment recommendation should match verified water conditions and the selected model’s documented capabilities.
TEXAS WATER HOUSE IN COCKRELL HILL
Services in Cockrell Hill.
UTILITY HISTORYCockrell Hill water: once a limit, now Dallas water
The Handbook of Texas says water became the key issue for Cockrell Hill's growth in its early years. Today the city buys its water from Dallas Water Utilities, which uses the Elm Fork of the Trinity River and lakes Ray Roberts, Lewisville, Grapevine, Ray Hubbard, Tawakoni and Fork. Dallas learned hard lessons about supply: during the drought of 1951 to 1957, the worst in its history, it reopened an old plant, drilled deep wells, pumped from the Red River and rationed water, then adopted a 1958 plan that produced Grapevine, Lewisville, Tawakoni and Ray Hubbard.
Sources: Handbook of Texas: Cockrell Hill, TX · City of Cockrell Hill 2025 CCR · Historical marker 'Water for Dallas' (Dallas Water Utilities timeline), HMDB transcription
04 / THE SOURCE MATTERS
A clear paper trail.
Research checked October 31, 2026. This date is not a sample date. Original reports are unchanged.
EWG is the primary source for this city record. Each result retains its data period and source; supplying-utility results are identified separately. Municipal report results supplement topics where no EWG result is available.
EWG primary source
EWG Tap Water Database — Nitrate in Tap Water ↗
2013-2024
Matched EWG utility record TX0570038. Historical testing data; see individual results for their summary periods.
Supplemental source
City of Cockrell Hill water quality report ↗
2025
Utility report; the results marked "Municipal report" on this page are read from it.